Motor control cabinet of pumping unit

Abstract

The invention provides a motor control cabinet for a pumping unit, which includes a glass fiber reinforced plastic box with an upper layer as a weak current room and a lower layer as a strong current room. The weak current room is equipped with a remote control receiving module, a short message sending module, a signal loop transformer, a low Transmission system control switch and single well signal acquisition device; the strong current room is equipped with a main power switch, alarm bell, AC contactor, control circuit switch, motor protector, capacitor switch, lightning arrester and capacitor. The motor control cabinet of the pumping unit provided by the present invention not only has the electrical isolation and motor protection functions of the ordinary control cabinet, but also has the functions of remote control start and stop of the oil well and fault SMS alarm function, and can also overcome the salt and alkali resistance and anti-corrosion of the metal casing control cabinet. The disadvantage of poor corrosion resistance has the advantages of light weight, high strength and strong corrosion resistance.

Description

technical field [0001] The invention relates to the technical field of motor control, in particular to a motor control cabinet of an oil pumping unit. Background technique [0002] The production of pumping units is inseparable from the motor control cabinet. At present, the motor control cabinets generally use metal shells, especially the control cabinets located in coastal areas, due to their poor salt and alkali resistance and corrosion resistance, the general service life is 2-3 years. Frequent replacement of motor control cabinets not only increases the production cost but also reduces Increased well operating time rate. In addition, the motor control cabinet is installed outdoors. When starting the oil well, it needs to touch the metal casing. Manually starting and stopping the pumping unit in rainy, snowy and wet conditions may cause electric shock. At the same time, because the pumping unit must be found by the well patrol personnel when it fails, sometimes the pum...

AI Technical Summary

Problems solved by technology

At present, the motor control cabinets generally use metal shells, especially the control cabinets located in coastal areas, due to their poor salt and alkali resistance and corrosion resistance, the general service life is 2-3 years. Frequent replacement of motor control cabinets not only increases the production cost but also reduces well run time rate

Moreover, the motor control cabinet is installed outdoors. When starting the oil well, it needs to touch the metal casing. Manually starting and stopping the pumping unit in rainy, snowy and wet conditions may cause electric shock hazards.

At the same time, because the pumping unit must be found by the well patrol personnel when it fails, sometimes the pumping unit fails to stop, sometimes it runs for a long time with a fault, and it cannot be found in time, which may cause the motor to burn or downhole failure, resulting in greater damage. Economic losses

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